Chip Chase and Sparkplug???

I Just recieved my chase figure from the history line of Spike in 20th Primes hand. It's a very cool edition for my Prime! So I got to thinking why weren't Chip Chase and Sparkplug never made? They were a major part of the Transformers universe and I would love to have them standing next to my Transformers.

Has anyone else wanted a Chip and Sparkplug? I didn't count Spike cause he's already available in the HOC line. But all three with articulated limbs would rule (No Chip jokes please).